[MEncoder-users] mencoder ignoring bitrate?

[jason wieland]

Hello Group,

I'm using cvs HEAD (current 4/10/2006) of mplayer/mencoder and ffmpeg.  I
must be doing something incorrectly.  I'm trying to encode a raw avi file
into a flv at about 500kbits/s

I'm using this command:
mencoder -quiet -ovc lavc -lavcopts vbitrate=500 -oac mp3lame -lameopts
abr:br=80 -srate 22050 -of lavf -lavfopts
i_certify_that_my_video_stream_does_not_use_b_frames -o ./small_wmv.flv
./temp/small_raw.avi

However mencoder does not seem to respect the vbitrate=500.
mencoder output reports:
Video stream:  293.274 kbit/s  (36659 B/s)  size: 957650 bytes  26.123 secs
26332 frames


Changing the vbitrate to something else, vbitrate=800 it does not change the
output video bitrate at all.
Video stream:  293.537 kbit/s  (36692 B/s)  size: 959060 bytes  26.138 secs
26332 frames

If it matters the input video is an avi of raw yv12 video and uncompressed
pcm audio

Can someone please help me out?

Thanks in advance,

Jason